Measurement of Collagen-Proteoglycan Interaction in Hypertrophic Scars

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Abstract
Collagen-proteoglycan interaction in hypertrophic scars was measured by staining tissue collagen with Sirius red, followed by elution of the bound stain, and photometric quantitation before and after papain digestion. Control sections from each of the specimens were treated with buffer solution instead of papain. The difference in dye concentration observed between respective untreated and digested sections was considered to be due to the unmasked basic groups of collagen originally bound to proteoglycans. The results suggest a significantly increased collagen-proteoglycan interaction in human hypertrophic scars as compared with nonhypertrophic scars, normal skin, and granulation tissues.

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